南京java培训机构 java 实现解压缩文件.doc

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1、南京Java培训机构Java实现解压缩文件Inthisarticleyouwilllearnhowtounzipfile.1.ReadZIPfilewith“ZipInputStream”2.Getthefilesto"ZipEntry”andoutputittouFileOutputStreamvDecompressZIPfileexampleInthisexample,itwillreadaZIPfilefromzipFile,anddecompressallzippedfilestoOUTPUT_FOLDERfolder.publicvoidunZjpIt(StringzipFi

2、le,StringoutputFolder){byte[]buffer=newbyte[1024];try{//createoutputdirectoryisnotexistsFilefolder=newFile(OUTPUT_FOLDER)；if(!folder.exists()){folder.mkdir()；}//getthezipfilecontentZipInputStreamzis=newZipInputStream(newFilelnputStream(zipFile))；//getthezippedfilelistentryZipEntryze=zis.getNextE

3、ntry()；while(ze!=null){StringfileName=ze.getName()；FilenewFile=newFile(outputFolder+File.separator+fileName)；System.out.println("fileunzip:”+newFile.getAbsoluteFile())；//createallnonexistsfolders//elseyouwillhitFileNotFoundExceptionforcompressedfoldernewFile(newFile.getParent())。mkdirs()；FileOut

4、putStreamfos=newFileOutputStream(newFile)；intlen;while((len=zis.read(buffer))>0){fos.write(buffer,OJen)；}fos.close()；ze=zis.getNextEntry()；}zis.closeEntry()；zis.close()；System.out.println(“Extractcompleted.")；Jcatch(lOExceptione){e.printStackTrace()；}}压缩解压完整实例：packageorg.hello.zip;importjava.io.

5、File;importjava.io.FilelnputStream;importjava.io.FileOutputStream;importjava.io」OException;importjava.util.ArrayList;importjava.util.List;importjava.util.zip.ZipEntry;importjava.util.zip.ZiplnputStream;importjava.util.zip.ZipOutputStream;publicclassAppZip{ListfileList;privatestaticfinalS

6、tringOUTPUT_ZIP_FILE=“C:\Logs.zip”;privatestaticfinalStringSOURCE_FOLDER=''C:\Logs‘‘;privatestaticfinalStringINPUT_ZIP_FILE=“C:\Logs.zip”；privatestaticfinalStringOUTPUT_FOLDER=“C:\outputzip”;AppZip(){fileList二newArrayList()；}publicstaticvoidmain(String[]args){AppZipappzip=newAppZip()

7、；appzip.generateFileList(newFile(SOURCE_FOLDER))；appzip.ziplt(OUTPUT_ZIP_FILE)；appzip.unZipIt(INPUT_ZIP_FILEzOUTPUT_FOLDER)；publicvoidunZipIt(StringzipFile,StringoutputFolder){byte[]buffer=newbyte[1024];try{//createoutputdir